I think I'm the only one here who has had both. They're both great but the Affinity is better IMO. It's got more suction settings, is easier to adjust for speed and suction, has a letdown feature, has a timer, and is even thinner and more portable with a lighter weight power plug. BUT it's noisier, so if you care about that, keep that in mind. I have a private place at work to pump so I don't care about noise level but I do throw a blanket over it if watching tv at home bc it is loud enough to compete some with the normal tv volume.
Re: which is better? lansinoh pumps...